How a variable is declared in PHP?

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A PHP variable is the name of the memory location that holds data. It is temporary storage.

Syntax:

$variableName=value;

In PHP, variables are declared using the following syntax:

php
$variableName = value;

Here’s a breakdown of this syntax:

  • $ sign: It is used to declare variables in PHP. It precedes the name of the variable.
  • variableName: This is the name you choose for your variable. It must start with a dollar sign followed by letters, underscores, or digits (but cannot start with a digit).
  • = sign: It is the assignment operator, used to assign a value to the variable.
  • value: This is the actual data assigned to the variable. It can be a string, number, boolean, array, object, or any other data type supported by PHP.

For example:

php
$name = "John";
$age = 25;
$isStudent = true;

This code declares three variables: $name, $age, and $isStudent, and assigns them values of "John", 25, and true respectively.